B. it conveys the subject of the paragraph.
A topic sentence is the main idea which is the subject of the paragraph.
C the treadmill is the correct answer
Answer: Headings Should Be General While , Subheadings Should Be More Specific.
Explanation: You’re Welxome!!
Answer:
Some people might not have saved a lot of money during their time working. Therefore, not having enough funds saved up in order to retire. Things are also more expensive than they used to be, causing old people to spend more money.
Explanation: